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C $Header: /u/gcmpack/MITgcm/pkg/gmredi/gmredi_rtransport.F,v 1.6 2001/12/16 18:54:49 jmc Exp $ |
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C $Name: $ |
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|
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#include "GMREDI_OPTIONS.h" |
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|
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subroutine GMREDI_RTRANSPORT( |
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I iMin,iMax,jMin,jMax,bi,bj,K, |
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I Tracer, |
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U df, |
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I myThid) |
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C /==========================================================\ |
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C | o SUBROUTINE GMREDI_RTRANSPORT | |
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C | Add vertical transport terms from GM/Redi | |
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C | parameterization. | |
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C |==========================================================| |
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C \==========================================================/ |
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IMPLICIT NONE |
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|
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C == GLobal variables == |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "GMREDI.h" |
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|
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C == Routine arguments == |
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C iMin,iMax,jMin, - Range of points for which calculation |
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C jMax,bi,bj,k results will be set. |
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C xA - Area of X face |
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C Tracer - 3D Tracer field |
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C df - Diffusive flux component work array. |
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INTEGER iMin,iMax,jMin,jMax,bi,bj,k |
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_RL Tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL df (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER myThid |
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|
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#ifdef ALLOW_GMREDI |
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|
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C == Local variables == |
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C I, J - Loop counters |
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INTEGER I, J |
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_RL dTdx,dTdy |
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_RL rTrans |
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|
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C Surface flux is zero |
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IF (useGMRedi .AND. K.GT.1) THEN |
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|
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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|
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C- Horizontal gradients interpolated to W points |
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dTdx = 0.5*( |
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& +0.5*(_maskW(i+1,j,k,bi,bj) |
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& *_recip_dxC(i+1,j,bi,bj)* |
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& (Tracer(i+1,j,k,bi,bj)-Tracer(i,j,k,bi,bj)) |
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& +_maskW(i,j,k,bi,bj) |
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& *_recip_dxC(i,j,bi,bj)* |
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& (Tracer(i,j,k,bi,bj)-Tracer(i-1,j,k,bi,bj))) |
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& +0.5*(_maskW(i+1,j,k-1,bi,bj) |
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& *_recip_dxC(i+1,j,bi,bj)* |
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& (Tracer(i+1,j,k-1,bi,bj)-Tracer(i,j,k-1,bi,bj)) |
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& +_maskW(i,j,k-1,bi,bj) |
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& *_recip_dxC(i,j,bi,bj)* |
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& (Tracer(i,j,k-1,bi,bj)-Tracer(i-1,j,k-1,bi,bj))) |
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& ) |
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|
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dTdy = 0.5*( |
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& +0.5*(_maskS(i,j,k,bi,bj) |
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& *_recip_dyC(i,j,bi,bj)* |
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& (Tracer(i,j,k,bi,bj)-Tracer(i,j-1,k,bi,bj)) |
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& +_maskS(i,j+1,k,bi,bj) |
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& *_recip_dyC(i,j+1,bi,bj)* |
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& (Tracer(i,j+1,k,bi,bj)-Tracer(i,j,k,bi,bj))) |
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& +0.5*(_maskS(i,j,k-1,bi,bj) |
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& *_recip_dyC(i,j,bi,bj)* |
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& (Tracer(i,j,k-1,bi,bj)-Tracer(i,j-1,k-1,bi,bj)) |
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& +_maskS(i,j+1,k-1,bi,bj) |
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& *_recip_dyC(i,j+1,bi,bj)* |
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& (Tracer(i,j+1,k-1,bi,bj)-Tracer(i,j,k-1,bi,bj))) |
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& ) |
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|
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C- Off-diagonal components of vertical flux |
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df(i,j) = df(i,j) |
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& - _rA(i,j,bi,bj) |
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& *( Kwx(i,j,k,bi,bj)*dTdx +Kwy(i,j,k,bi,bj)*dTdy ) |
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|
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ENDDO |
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ENDDO |
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|
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#ifdef GM_BOLUS_ADVEC |
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IF (GM_AdvForm .AND. GM_AdvSeparate) THEN |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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rTrans = |
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& dyG(i+1,j,bi,bj)*GM_PsiX(i+1,j,k,bi,bj) |
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& -dyG( i ,j,bi,bj)*GM_PsiX( i ,j,k,bi,bj) |
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& +dxG(i,j+1,bi,bj)*GM_PsiY(i,j+1,k,bi,bj) |
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& -dxG(i, j ,bi,bj)*GM_PsiY(i, j ,k,bi,bj) |
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df(i,j) = df(i,j) |
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& +rTrans*0.5 |
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& *(Tracer(i,j,k,bi,bj)+Tracer(i,j,k-1,bi,bj)) |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* GM_BOLUS_ADVEC */ |
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|
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c IF (.NOT.implicitDiffusion) THEN |
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c |
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c This vertical diffusion term is currently implemented |
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c by adding the VisbeckK*Kwz diffusivity to KappaRT/S |
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c See calc_diffusivity.F and calc_gt.F (calc_gs.F) |
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c |
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c DO j=jMin,jMax |
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c DO i=iMin,iMax |
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c df(i,j) = df(i,j) - _rA(i,j,bi,bj) |
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c & *maskUp(i,j)*VisbeckK(i,j,bi,bj)*Kwz(i,j,k,bi,bj) |
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c & *recip_drC(k)*rkfac |
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c & *(Tracer(i,j,k-1,bi,bj)-Tracer(i,j,k,bi,bj)) |
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c ENDDO |
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c ENDDO |
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c ENDIF |
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|
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ENDIF |
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#endif /* ALLOW_GMREDI */ |
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|
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RETURN |
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END |
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